867996861 has 8 divisors (see below), whose sum is σ = 1157774400. Its totient is φ = 578441952.

The previous prime is 867996823. The next prime is 867996881. The reversal of 867996861 is 168699768.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 867996861 - 2¹⁰ = 867995837 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 867996795 and 867996804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867996821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46336 + ... + 62313.

It is an arithmetic number, because the mean of its divisors is an integer number (144721800).

Almost surely, 2^867996861 is an apocalyptic number.

It is an amenable number.

867996861 is a deficient number, since it is larger than the sum of its proper divisors (289777539).

867996861 is a wasteful number, since it uses less digits than its factorization.

867996861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111315.

The product of its digits is 7838208, while the sum is 60.

The square root of 867996861 is about 29461.7864529631. The cubic root of 867996861 is about 953.9070346585.

The spelling of 867996861 in words is "eight hundred sixty-seven million, nine hundred ninety-six thousand, eight hundred sixty-one".